220311301123 has 4 divisors (see below), whose sum is σ = 220313380968. Its totient is φ = 220309221280.

The previous prime is 220311301121. The next prime is 220311301181. The reversal of 220311301123 is 321103113022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220311301123 - 2¹ = 220311301121 is a prime.

It is a super-2 number, since 2×220311301123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 220311301123.

It is not an unprimeable number, because it can be changed into a prime (220311301121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 871993 + ... + 1095898.

It is an arithmetic number, because the mean of its divisors is an integer number (55078345242).

Almost surely, 2^220311301123 is an apocalyptic number.

220311301123 is a deficient number, since it is larger than the sum of its proper divisors (2079845).

220311301123 is a wasteful number, since it uses less digits than its factorization.

220311301123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079844.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 220311301123 its reverse (321103113022), we get a palindrome (541414414145).

The spelling of 220311301123 in words is "two hundred twenty billion, three hundred eleven million, three hundred one thousand, one hundred twenty-three".